| Konstantin | Constantine |
| Konstantinopel | Constantinople |
| Konstante | constant |
| konstant | constant constantly |
| Konstanze | Constance |
| konsanguin | consanguineous |
| Konstanz | constancy Constance |
| Konstanza | faithfulness |
| instantan | instantaneous |
| Konsultation | consultation |
| Konsumtion | consumption |
| könnten | might |
| Konkani | Konkani |
| Konnotation | connotation |
| Konsonant | consonant |
| Konstitution | constitution |
| Konstruktion | construction |
| Konsumption | merger consumption |
| Kontakt | contact |
| Kontrahentin | opponent rival counterparty |